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verb \ˈnō\

Definition of know

knew play \ˈnü also ˈnyü\ known play \ˈnōn\ knowing

  1. transitive verb
  2. 1 a (1) :  to perceive directly :  have direct cognition of (2) :  to have understanding of <importance of knowing oneself> (3) :  to recognize the nature of :  discern b (1) :  to recognize as being the same as something previously known (2) :  to be acquainted or familiar with (3) :  to have experience of

  3. 2 a :  to be aware of the truth or factuality of :  be convinced or certain of b :  to have a practical understanding of <knows how to write>

  4. 3 archaic :  to have sexual intercourse with

  5. intransitive verb
  6. 1 :  to have knowledge

  7. 2 :  to be or become cognizant —sometimes used interjectionally with you especially as a filler in informal speech

knowable play \ˈnō-ə-bəl\ adjective
knower play \ˈnō-ər\ noun
know from
  1. :  to have knowledge of <didn't know from sibling rivalry — Penny Marshall>

Examples of know in a sentence

  1. He knows a lot about the history of the town.

  2. Do you know the answer?

  3. I don't know her name.

  4. Do you know what time it is?

  5. I don't know the words to that song.

  6. They knew a good deal about the problem.

  7. She knows the rules of the game.

  8. If you want the answer, ask someone who knows.

  9. I don't know much about art, but I know what I like.

  10. She knows that many people will not believe her.

Origin of know

Middle English, from Old English cnāwan; akin to Old High German bichnāan to recognize, Latin gnoscere, noscere to come to know, Greek gignōskein

First Known Use: before 12th century




Definition of know

in the know
  1. :  in possession of exclusive knowledge or information; broadly :  well-informed


First Known Use of know


KNOW Defined for Kids


verb \ˈnō\

Definition of know for Students

knew \ˈnü, ˈnyü\known \ˈnōn\knowing

  1. 1 :  to recognize the identity of <I know that guy!>

  2. 2 :  to be aware of the truth of <We know that the earth is round.>

  3. 3 :  to have a practical understanding of <Her little sister already knows how to read.>

  4. 4 :  to have information or knowledge <He knows all about cars.>

  5. 5 :  to be or become aware <The president knew about the problem.>

  6. 6 :  to be acquainted or familiar with <A taxi driver knows the city well.>

  7. 7 :  to have understanding of <It's important to know yourself.> <I don't know why this happens.>

  8. 8 :  to recognize the nature of <We knew them to be honest.>

Seen and Heard

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to expose to danger or risk

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